I recently put a new 1969 250 in my Jeep. It's an older model than the 250 I had in it before which was from a 1975 Nova. The older engine had a points type distributor. I took the HEI distributor and coil off the 75 engine and put it on the 69 engine. I cranks 1st turn and runs fairly smooth. Except for a stumble acceleration which seems like it probably is a heat problem from what I read in the TECH TIPS :WHY YOU NEED HEAT TO YOUR INLET MANIFOLD - by Tom Langdon

Question is: What is the correct plug gap for the HEI, I know it should probably be more than the .035 that the original point type ignition was for the 69. Is .045 or .060 about right?

Also, what would be the most inexpensive way to solve the problem I have with heating the intake (assuming that's my problem)

Sorry this post got so long. Thanks in advance for your help.

-Nic